Performance of Hybrid PON Architecture using On-Off Keying and Differential Quadrature Phase Shift Keying

With an increase in network traffic, optical networks find their use in communication of high rate data systems and are used in the access part of the network. The main technology used here is the Hybrid Passive Optical Network (Hybrid PON) which provides longer reach and a higher data rate. Wavelength Division Multiplexing (WDM) PON can make the transmission through optical fiber possible for a long distance at a high data rate. A Hybrid PON utilizes the advantages of WDM-PON as well as share the same wavelength with a number of users. This research basically aims at improving the data rate and in increasing the reach of such a network by using different modulation techniques and amplifiers. Normally On-Off Keying (OOK) is used in such an access network scenario. We have analyzed the effect of the Differential Quadrature Phase Shift Keying (DQPSK) line technique in comparison to the usual On-Off Keying (OOK) technique with and without Erbium-Doped Fiber Amplifier (EDFA).